解释了构成中庭烟雾管理基础的稳态火灾、非稳态火灾、区域火灾模型和火灾羽流的物理概念。根据区域火灾模型的概念，阐述了规范中烟气控制设计计算的方法。在分区模型中，烟雾形成一个向上流动的火羽流，到达天花板，并被视为在火源房间的天花板下形成一个完全混合的层。结果表明，中庭烟雾管理不需要对羽流方程进行常用的虚拟原点校正。说明为了烟雾管理的目的，由于忽略虚拟原点校正，火灾羽流质量流的偏差可以忽略。单位:双关键词:1997年，中庭，烟雾，气流，计算，火灾引文:研讨会，ASHRAE交易，第103卷，第2部分，波士顿1997

Explains the physical concepts of the steady fire, unsteady fire, zone fire model and the fire plume, which form the basis of atrium smoke management. States the approach to smoke control design calculation in codes in based on the zone fire model concept. In the zone model, smoke forms an upward-flowing fire plume that reaches the ceiling and is considered to form, a perfectly mixed layer under the ceiling of the room of fire origin. Shows that the commonly used virtual origin correction to the plume equations is not needed for atria smoke management. States that for the purposes of smoke management, the deviations of fire plume mass flows due to omitting the virtual origin correction can be neglected.Units: DualKEYWORDS: year 1997, Atria, smoke, air flow, calculating, fire